TCP/IP, said the ack usually perform a message for confirm the strategy, which is two segments Shared an ack, but figure 20.3 and figure 20.7 are one-time ran out of the window and then confirm the last one in the window message segment, rather than the above said across a message segment strategy, is this why?

CodePudding user response:

And confirm the recv function set the size of the buffer, usually once every execution recv would send an ACK packet to the other party, if recv buffer is big enough, then receives an ACK after many package again reply,